Cup Cake watched with wavering patience as her husband had the time of his life with the young mare she’d brought to bed... After plenty of reassurances from Cup, Pinkie Pie had agreed to the unconventional proposal. This was a good plan. This would save their marriage. But after having more time to think about it, Cup began to question whether their marriage needed any sort of saving in the first place.

Carrot Cake moaned as if he’d never touched a mare before… Cup adjusted the pillow she was leaning her back against. This was her idea. None of this was Carrot’s fault. “Enjoy yourself,” she had said, as if she were bringing him on some surprise vacation. Now that he was obviously enjoying himself, Cup felt like calling the whole thing off. Carrot hadn’t touched her once. All of his attention went straight to Pinkie. Of course, that could be blamed on the Cakes’ lack of experience with threesomes, or maybe Cup simply didn’t have the courage to speak up at this point.

Pinkie’s expression was somewhere between pure bliss and mindless stupidity… It hurt Cup to see Pinkie loving this so much. Pinkie made her nonchalant attitude towards sex very obvious, but Cup expected, or at least hoped, for more protesting from the young mare. Once the initial awkwardness had worn off, it was Pinkie that got things going. Not a second was wasted. Everything Cup knew about foreplay was thrown out the window. It wasn’t needed. Pinkie Pie already had a relentless sex drive, and once Carrot received the nod of approval from his wife, he was lost in it. It would take an army to drag him away.

Cup looked away, but she couldn’t escape the sounds: Pinkie Pie’s giggly gasps, Carrot’s immodest moans, and the vulgar smacking of their bodies… Cup wanted to think of something else, but all she could picture was her husband’s face. It was the look on his face when she suggested this ridiculous idea. At first, Carrot thought his wife was accusing him of something, but Cup didn’t say a word about the magazine she knew he read. She only brought up her own interest in other stallions, causing her offer to seem like she was making things even between them. That was a big mistake. Cup had done a horrible job of explaining herself, but even she couldn’t remember why she had ever though that this was a good idea.

Pinkie Pie’s puffy tail began to stand up and twitch… How was bringing in another mare supposed to fix whatever she thought needed fixing? Cup meant for this to spice up their sex life (whatever that meant). This certainly spiced things up, but it created more problems than there even were to begin with. Carrot’s calm and understanding attitude should have been enough. He knew Cup’s interest in “Hung Hunks” was nothing more than a harmless fantasy. Although he didn’t specifically mention “The Mare,” he admitted to having similar fantasies about other mares. This is where it should have ended. Cup’s stupid plan wasn’t needed at all. But something made her invite Pinkie into their bed anyway.

“Ooh Mr. Cake,” Pinkie moaned in an uncharacteristically sultry voice… If anything, Cup should have brought two ponies. Pinkie Pie was the one that helped set this whole crazy situation in motion, and she was certainly ready and willing. But Cup couldn’t believe the thought of bringing in another pony hadn’t even crossed her mind. Because of her somewhat apologetic nature, Cup wanted her husband to have the special treatment. Living out a secret fantasy would be all for him. This was supposed to make Cup happy too. Now she remembered. This was meant to be like giving any other gift. The giving and the receiving were meant to make both parties equally happy. That’s how it had always been for the two of them. So why would this be any different?

Carrot made the most satisfied sound Cup had ever heard him make. It was over.

“Great job, Mr. Cake!” Pinkie applauded in her typical high pitched voice.

Carrot didn’t respond. He was still catching his breath. Cup watched out of the corner of her eye as her husband tossed the used condom into the nearby trash bin. He fell onto his back with his head landing next to Cup’s leg.

“Wow…” he gasped.

What was so special about that? Cup couldn’t think of one thing Pinkie did that was any different than what she did with her hubby. Was a quickie with a younger mare really that much of an improvement? Cup couldn’t help but scowl.

“Hi honey,” said Carrot, finally acknowledging his saint of a wife. “Maybe this is the wrong thing to say but…thank you.”

Cup felt offended and gratified at the same time. She gently raised her hoof, not sure if she wanted to smack her husband or pat him on the head. She did neither.

“I’m glad you enjoyed yourself, dearie,” she said, which was the exact thing she had told herself she wouldn’t say.

“Wowie…” sighed Pinkie, from the other end of the bed. “Mr. Cake knows how to make a mare tingly.”

“I didn’t hurt you or anything, did I?” asked Carrot. “And…did you…you know…finish?”

Cup’s urge to smack Carrot returned.

“Twice!” Pinkie’s head sprang up as she proudly declared her multiple orgasms.

“And what about you, muffin?” asked Carrot, nudging his nose against her thigh.

Cup didn’t know what to say. Carrot had assumed that she was pleasuring herself this whole time. Could that mean at least part of his enthusiasm was for her? Had Cup been wrong? Maybe Carrot didn’t see this as a gift or an apology after all. He must have thought that Cup wanted to see this and that she was getting some sort of thrill from watching him with Pinkie. Cup was ashamed of herself for even considering that her hubby was being selfish.

“Yes,” she blurted out. “Three times.”

Her lie seemed to satisfy Carrot. He crawled up on top of her and gave her a gentle kiss on the cheek.

“Well then,” said Carrot. “I hope I don’t sound too reckless when I say I’m ready for round two.” He gave her a wink.

Cup’s eyes lit up. She adjusted her legs and gazed at her husband as he leaned back, ready to make love to her. He reached for another condom and opened the package with his teeth. His penis was still hard enough for the protective rubber to slide on easily, with the help of his wife of course.

“Thanks, sugar muffin,” said Carrot as the two of them finished securing the condom.

Cup closed her eyes and sighed, “I love you.”

“I love you too,” Carrot moaned.

“Woohoo!” Pinkie cheered.

Cup quickly opened her eyes and sat up. Carrot was already inside Pinkie Pie. He turned to his wife and gave her cheerful smile. All Cup could do was smile back.

Author's Note

I originally planned to completely skip this part of the story and leave their sexual encounter just implied, but I suddenly got inspired to write this.